vlib/v/checker/tests/is_type_not_exist.vv:10:10: error: is: type `testmod.SomethingThatDontExist` does not exist
    8 | 
    9 | fn fn_with_sum_type_param(i Integer) {
   10 |     if i is SomethingThatDontExist {
      |             ~~~~~~~~~~~~~~~~~~~~~~
   11 |         println('It should fail !')
   12 |     }
vlib/v/checker/tests/is_type_not_exist.vv:10:10: error: `testmod.Integer` has no variant `testmod.SomethingThatDontExist`
    8 | 
    9 | fn fn_with_sum_type_param(i Integer) {
   10 |     if i is SomethingThatDontExist {
      |             ~~~~~~~~~~~~~~~~~~~~~~
   11 |         println('It should fail !')
   12 |     }
vlib/v/checker/tests/is_type_not_exist.vv:29:11: error: is: type `testmod.empty_foo` does not exist
   27 |     _ := testmod.empty_foo
   28 |     fb := Foobar(Foo{foo: 5})
   29 |     if fb is testmod.empty_foo{}
      |              ~~~~~~~
   30 | }
vlib/v/checker/tests/is_type_not_exist.vv:29:11: error: `testmod.Foobar` has no variant `testmod.empty_foo`
   27 |     _ := testmod.empty_foo
   28 |     fb := Foobar(Foo{foo: 5})
   29 |     if fb is testmod.empty_foo{}
      |              ~~~~~~~
   30 | }
vlib/v/checker/tests/is_type_not_exist.vv:1:1: error: project must include a `main` module or be a shared library (compile with `v -shared`)
    1 | module testmod
      | ^
    2 | 
    3 | type Integer = i8 | i16 | int | i64
